William de Ros III Baron Ros of Belvoir 
William de Ros III was born in Yorkshire, England. William de Ros III's father was Sir Robert de Ros IV Baron Ros of Belvoir and his mother was Isabel de Albini. His paternal grandparents were Sir William de Ros I of Hamlake and Lucia FitzPiers of Brecknock; his maternal grandparents were William de Albini Lord Belvoir and Albreda Biseth. He had a brother and two sisters, named Robert, Joan and Isabel. He died on August 15th, 1316.General Notes
William de Ros, 3rd Baron Ros, was summoned to parliament from 20 November, 1317, to 12 September, 1342. This nobleman, in the 5th Edward II (1312), was one of the commissioners appointed to negotiate peace with Robert Bruce, King of Scotland, about which time he came to an agreement with the king regarding the castle of Werke, which he then exchanged with the crown for other lands. He was subsequently much engaged in the wars of Gascony and Scotland. His lordship m. Margery, elder sister and co-heir of Giles de Badlesmere, of Leeds Castle, in Kent, a great feudal baron, by whom he had issue, William, his heir; Thomas, who s. his brother; Margaret; Maud, m. to John, Lord Welles; Alice, m. Nicholas, Lord Meinell; and Milicent, m. to William, Lord d'Eyncourt. He d. 16 February, 1342-3, and was s. by his elder son, William de Ros, 4th Baron Ros. [Sir Bernard Burke, Dormant, Abeyant, Forfeited, and Extinct Peerages, Burke's Peerage, London, 1883, p. 459, Ros, or Roos, Barons Ros]
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Ancestor Pedigree Chart
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- b.BET. 1170 - 1173 in Helmsley, Holderness, Yorkshire d.<23 Dec 1226 in of Helmsley, Holderness, Yorkshire
- b.BET. 1192 - 1193 in Helmsley, Yorkshire, England d.~ 1264 in Kirkham, England
- b.~ 1165 in Scotland
- b.~ 1223 in Belvoir d.17 May 1285 in Kirkham, England
- b. in Brecknock, Wales d.01 Jun 1235
- b.~ 1196 in Helmsley, Yorkshire, England d.> 1266
- d.< 1225
- b.BET. 1250 - 1255 in Yorkshire, England d.15 Aug 1316
- b.1165 in of Belvoir Castle, Leicestershire d.<30 Mar 1221 in Cainell, near Rome, Italy
- b. in of Belvoir Castle, Leicestershire d.1247
- b.1171 d.1233
- b.~ 1223 in of Belvoir Castle, Leicestershire d.15 Jun 1301
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‌William de Ros III and Maud were married in a religious ceremony in 1287. They had three sons and three daughters, named William de Ros IV, John, Thomas, Agnes (Anne), Mary and Margaret.
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